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> Boxster V8 conversion !!!, Goto last few pages and see the LS1 being fit!!!
Boxster V8 conversion !!!
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Brad Roberts
post Mar 5 2009, 07:46 PM
Post #81


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The starter is on the engine.. does the BoxsterS box not have the dual starter provisions (12'oclock and 5 o'clock?)



B
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BeyondBad914
post Mar 5 2009, 08:36 PM
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https://store.gmperformanceparts.
com/store/...--19171224--%3E://https://store.gmperformanceparts.
c...--19171224--%3E


(IMG:http://www.914club.com/bbs2/style_emoticons/default/happy11.gif)
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andys
post Mar 5 2009, 08:54 PM
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QUOTE
QUOTE
I don't like how it is shifted.. I'd rather use the Cable shifted BoxsterS 6 speed!~

B


He simply employed the stock Lotus shifter which is a rod/cable hybrid like a DeLorean. That's not an issue if you use the cable shifted Boxster 012 5 speed (should bolt right up). The 6 speed Boxster trans will be a problem due to that weird starter location.

Andys


Hmm, just re-read my post and it sounds confusing. How about this:

If you use the Boxster 5 speed trans, the cable shifting will remain unchanged. The 5 speed trans will also bolt right up to the Audi V8. If you plan to use the 6 speed Boxster trans, then there will be a problem with accomodating the Audi V8 since the (Boxster) starter pocket on the trans is in an odd location and won't match up. The trans pictured in the Lotus is an Audi model 01X 6 speed that's rare in the US (That Lotus is being built in the UK).

Andys
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andys
post Mar 5 2009, 09:10 PM
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QUOTE
The starter is on the engine.. does the BoxsterS box not have the dual starter provisions (12'oclock and 5 o'clock?)

B


That would be great if it does; you'd know better than I would. Here's the only photo I have of the Boxster 6 speed and I see no 5 o'clock option; that the right one, Brad?

Andys
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Brad Roberts
post Mar 5 2009, 09:32 PM
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Yeah.. that looks correct. Sure enough, NO 5 o'clock! Damn. I did understand that his car was being built in the UK. He mentions something about the 6 speed coming from an Audi TDI (I know they are diesel crazy over there)


B
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Brad Roberts
post Mar 5 2009, 09:36 PM
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I just looked up the 996 tranny..which is the BoxsterS 6 speed. No 5 0'clock on it! But it appears the bellhousing could be easily notched and not compromise strength??


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Brad Roberts
post Mar 5 2009, 09:42 PM
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This shot tells me.. I can use the 6 speed. The starter does not protrude very far into the bell housing!

This shot also tells me the Cayenne V8 will work (IMG:http://www.914club.com/bbs2/style_emoticons/default/lol.gif) Just realized the bellhousing bolt pattern!~~~!!!


(IMG:http://i67.photobucket.com/albums/h286/s3esprit/IMG_0506750x562.jpg)
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Brad Roberts
post Mar 5 2009, 09:43 PM
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Funny part... that flywheel looks identical to what we use in the Boxster!


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bdtoel
post Mar 5 2009, 10:52 PM
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Is there an adapter from this Boxster 6 speed to SBC by KEP or anyone?

What is the cost for a used one and HP/Torque rating?

Is it a good candidate for the 914 w/SBC?

Brian
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bdtoel
post Mar 5 2009, 10:53 PM
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Would there be major reworking and fabrication for clutch and shift linkages?
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grantsfo
post Mar 6 2009, 12:26 AM
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another one
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Brad Roberts
post Mar 6 2009, 01:43 PM
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That is the Cayenne V8 !!! No BS!!! Same bellhousing.. same intake.. same plastic covers..!! We are ON!!


B
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grantsfo
post Mar 6 2009, 01:50 PM
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QUOTE
That is the Cayenne V8 !!! No BS!!! Same bellhousing.. same intake.. same plastic covers..!! We are ON!!


B


I'm forum fishing to see if anyone is using either Boxster tranny with these V8's for kit cars etc. Will post here if I find more info. Obviously a Cayenne motor is even more desirable as then car stays PCA legal. I'd abandon all projects to make that work. The economy just has my project budget money in the dumper.
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Brad Roberts
post Mar 6 2009, 09:50 PM
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100% confirmed. The Audi R8 engine is the Cayenne engine, only with better electronics than the Cayenne!! I'm re-bodying a 9146 race car for a shop owner in Penn. who works on Porsche's and Audi's. He confirmed my suspicion! He says the Audi R8 is stupid popular on the east coast and that the best engines to use are the 2000 and up engines. He says the 97-99 engines all need head gaskets and some updates!


B
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r_towle
post Mar 7 2009, 11:28 AM
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So, has anyone decided to put a Cayenne engine into a 914 yet?

Rich
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grantsfo
post Mar 7 2009, 02:34 PM
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Audi guys the think the V8 will bolt to a boxster 5 spd tranny. But no one has actually seen it done. They have stand alone ECU (place in So Cal does some stuff), lots of clutch options, etc. If it would fit in engine bay and bolt to tranny it sounds like a real possibility. Some asked why not a 2.7 turbo or a variant of the Audi 6 cylinder motor. The audi V6 motor takes well to forced induction and can be tuned to some impressive HP numbers. Would have to see if there is room for turbos and plumbing.
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grantsfo
post Mar 7 2009, 02:52 PM
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QUOTE
100% confirmed. The Audi R8 engine is the Cayenne engine, only with better electronics than the Cayenne!! I'm re-bodying a 9146 race car for a shop owner in Penn. who works on Porsche's and Audi's. He confirmed my suspicion! He says the Audi R8 is stupid popular on the east coast and that the best engines to use are the 2000 and up engines. He says the 97-99 engines all need head gaskets and some updates!


B



I dont know about the R8 V8 being same motor as the Porsche motor. It has much smaller bore 84.5mm verses 96mm and Audi guys say there is not much room to go bigger bore? Perhaps thats why Audi is stuck with 4.2 liters while Porsche has gone to 4.8.
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9146racing
post Mar 8 2009, 01:58 AM
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QUOTE
100% confirmed. The Audi R8 engine is the Cayenne engine, only with better electronics than the Cayenne!! I'm re-bodying a 9146 race car for a shop owner in Penn. who works on Porsche's and Audi's. He confirmed my suspicion! He says the Audi R8 is stupid popular on the east coast and that the best engines to use are the 2000 and up engines. He says the 97-99 engines all need head gaskets and some updates!


B

you mean the Cayenne engine is a Audi engine!!!!!!, (IMG:http://www.914club.com/bbs2/style_emoticons/default/happy11.gif)
but there is more to it. call me monday evening
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grantsfo
post Mar 9 2009, 07:03 PM
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QUOTE
QUOTE
100% confirmed. The Audi R8 engine is the Cayenne engine, only with better electronics than the Cayenne!! I'm re-bodying a 9146 race car for a shop owner in Penn. who works on Porsche's and Audi's. He confirmed my suspicion! He says the Audi R8 is stupid popular on the east coast and that the best engines to use are the 2000 and up engines. He says the 97-99 engines all need head gaskets and some updates!


B

you mean the Cayenne engine is a Audi engine!!!!!!, (IMG:http://www.914club.com/bbs2/style_emoticons/default/happy11.gif)
but there is more to it. call me monday evening

DOes anyone know where I can find a cutaway drawing of the Cayenne V8? At minimum a picture of one?
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Wes V
post Mar 16 2009, 10:19 PM
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While talking (actually IMing) with a friend about this string, An interesting thought came up.

It would be illegal to install the Cayenne engine in a Boxster or 914 due to the fact that California considers the Cayenne a "truck". You simply can't legally install a truck engine in a car and get it through the smog referee process here. That's not to say that in other states they wouldn't have a problem with it.

And don't make statements that you could put it in a pre76 914 due to there being no smog checks. It's still illegal and if a cop ever wanted to give you a hard time, you are out of luck!!!!! Ya, a cop could write you up and make you take your car to the referee.



What I'd like to know is if the Audi "R8" V8 Brad is talking about is the same one as used in the Lotus conversion. I'm under the impression it's just from an A8.



I do think it would be soooo cool to show up at a Porsche event with a 914 with "Porsche" Cayenne V8 and see what reasons they had for bumping you out the gate. I'd bet that even though it may be all porsche, you still wouldn't be welcome.

Wes V
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